Turbine.



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No. 863,655.V

PATENTED 00T. 22, 1907. R. H. GoLDsBoRoUGH.

TURBINB.

APPLICATION FILED JAN. 29, 1907.

. llUTEB'IED OCT. 22,1907. ,R. H. GOLDSBOROUGH.

TURBINB. APPLICATION FILED JAN-29. 1907.

www cases PATENTED OCT. 22, 1907. R. H. GOLDSBOROUGH.

TURBINE. v

`MPLIGMION FILED JAN. 29. 1907.

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No. 868,655. PATENTED OCT. 22, 1907.

` R. H. GOLDSBORUGH.

Y TURBIN-B.

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No. 868,655. l PATENTBDOGT. 22, 1907.

R. H. GoLDsBoRoUGH.

TURBINE. APPLICATION HLED JAN. 29, 1907.

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UNITED STAIFSMAENT OFFICE.

TURB INE Specification of Letters Patent.

Patented Oct. 22, 1907.

Application filed January 29,1907. Serial No. 354,676.

To all 'whom it may conca-wrt.'

Be it known lthat I` RICHARD II. GoLDsBonoUen, a citizen or the United States, residing at Washington, District olf Columbia, have invented certain new and usel'ul Improvements in Turbines, of which the following is a specification.

My invention relates to improvements in turbines, and it consists in the constructions, combinations and arrangements herein described and claimed.

An object ol' my invention is to provide a simple and compact form ol' compound turbine, especially adapted for automobile torpedoes, and other devices, where certainty of continuous operation is paramount.

A, further object of my invention is to provide a compound turbine in which the actuatingmedium is repeatedly directed through the rotor vanes by a series ofjets ol progressively increasing velocity, whereby an ellicient distribution oi pressure oi the actuating medium will be insured and the losses incident to friction and regeneration of pressure of said medium will be minimized.

In the accompanying drawings, `forming a part o this application and in which similar reference symbols indicate corresponding parts in the several views-Figure l is an axial sectional view, on the line 1 1, oi Fig. 2, illustrating one embodiment of my invention; Fig. 2 is a sectional view on the line 2 2, oi Fig. l, clearly showing the arrangement of the annular series of admission ports; Fig. 3 is a sectional view on the line 3 3, oi Fig. l, showing the arrangement oi the annular series ol exhaust ports; Fig. l is a detail sectional view through the lnal exhaust port, ou the line 4 4, of Fig. 2; Fig. 5 is a iragnien tary perspective view oi the rotor, showing a modified construction in which the vanes extend across said rotor with a slight rearward inclination; Fig. (5 is a perspective view oi a portion of the port ring, clearly illustrating the arrangement of the admission ports; Fig. 7 is a perspective view oi the port ring, showing the exhaust port side thereol; Fig. 8 is a development oi the outer periphery o the port ring and the annular closure plates at each side thereof; and Fig. 9 is a similar development of the inner periphery of the port ring and closure plates.

Referring to the drawings, l indicates a turbine casing suitably secured, as by a series oi bolts 2 to two casing heads 3; a port ring i and side closure rings 5 being supported within said casing and heads.

An annular' series oi substantially U-shaped vanes is clamped between two annular blocks 6, which latter' are provided with cooperating recesses 7 corresponding to the outer contour ol' the vanes; a central division and clamping ring 8 extending around the annular series of vanes between the admission legs 9 and discharge legs 10 oi the several varies. The annular blocks 6 are pret erably provided with relatively soi t seats G for permitting slight impression ol" the vanes therein whenthe parts are clamped together. Such seats can be advantageously provided by lining the recesses 7 with sheets of copper, or by electro-depositing copper, or other suitable metal, on the walls of said recesses.

Rotor disks ll, secured to the turbine shaft 12, carry an annular spacing member 13 whose outer periphery constitutes a seat for the annular blocks G. The spacing member 13 and block 6 are clamped between the rotor disks l1 by a series of bolts 14; suitable means, such as bolts 15,' being provided for preventing shifting of the rings 6.

The U-shaped reversing Vanes comprise admission legs 9, of mainlylrinetic type, and discharge legs I0, of mainly pressure type, connected by a portion 16 of increased width; as shown in Fig. 6, the rotor vanes can be extended across the rotor with a slight rearward inclination, thereby causing the entire length ofthe U- shaped vanes to constitute a continuous active vane. Such modification is advantageous in small sizes of Inotors, under certain conditions of operation. The increased width oi the connecting portions 16 of the vanes produces a reduction of velocity and slight regeneration of pressure in the actuating medium during its deflection while passing from the ladmission legs to the discharge legs of the vanes; thereby minimizing the friction oi the actuating medium during its deflection and efliciently augmenting the action oi both the admission and discharge legs.

The port ring 4 is provided on its respective sides with a series of admission ports 17 to 23 and a corresponding series oi discharge ports 24 to 30. The successive ports of each series are shown having a uniform depth, and a progressively increased peripheral Width to accommodate the expansion of the actuating medium during its flow through the series. A series ot' recesses 3l to 3G, extending angularly across the outer periphery of the port ring 4, constitute chambers connecting the outer ends of the several exhaust ports with the outer ends o the next succeeding admission ports. The several ports and their connecting chambers are suitably proportioned to produce a progressively increased velocity of the steam flow in the successive admission ports of the series; the velocity of the steam in the initial admission port being preferably made as low as practicable without causing a defective brake action of the steam in the early stages.

The angle at which each exhaust port is positioned in advance of the next receiving admission port de`- ponds upon the relation between the steam velocity and rotor speed, and the recesses, connecting the outer ends of the several exhaust ports with the outer ends of the next succeeding admission ports, extend across the port ring at an angle determined by said advance angle of the exhaust ports and by the peripheral dimensions oi the successive ports oi the series. With a constant relation between the steam velocity and rotor speed, the progressively increased peripheral dimension of the succeeding ports would necessitate an impracticably great angularity of the connecting recesses before an advantageous or efficient number of stages had been reached.

In the improved construction illustrated, the pr'ogressively increased velocity of the steam fiow in the successive admission ports causes a progressive decrease in the advance angle of the several exhaust ports relative to the next precedingT admission ports. This decrease in the advance angle of the successive exhaust ports enables the inner' ends of the ports of the admission and exhaust series to be uniformly spaced in staggered relation along the periphery of the r'otor vanes, without causing an impracticably great angrilarity of the chambers connecting the outer' ends of the ports. Such staggered relation between the uniformly spaced ports of the admission and exhaust series causes a very uniform distribution of the driving force about the periphery of the rotor. With large diameters of rotors, several independent sets of such successive series of ports can be uniformly spaced about the periphery of the rotor; thereby multiplying the power and maintaining a uniform distribution of the driving force'about the periphery of the rotor.

As shown especially in Fig. 9, the above described construction enables the inner ends of the several admission ports to extend past, or overlap the inner ends of the adjacent exhaust ports; thereby providing a continuous zone of ports along the periphery of the rotor, which minimizes distortion of the parts under' the action of varying temperatures and permits the employment of efficiently small rotor clearance.

In the operation of my invention, the steam, or other actuating medium, is conducted by a main supply pipe 37 under suitable pressure to a steam chest 38. The initial admission port .l.7, leading from the steam chest 38, directs the steam at an eiiicient angle against the admission legs of the rotor vanes, from which it is deflected past the vane portion IG to the corresponding discharge legs; a slight generation of the steam pr'essure being produced during its passage from the admission to the discharge legs. After thus following a substantially U-shaped path through the vancs, the steam is peripherally discharged into the first exhaust port 24, from which it is conducted by the recess 3l across the outer periphery of the port ring to the outer end of the next succeeding admission port I8. The admission port lS directs the steam again through the rotor vanes, from which it is discharged into the next succeeding exhaust port 25. From the exhaust port 25, the steam is conducted perpendicularly across the `invention provides a compact and simple form of compound turbine, having a uniform distribution of the driving force about the periphery of the rotor, free from the defects due to distortion of the parts under the action of varying temperatures, and in which the losses incident to friction and regeneration of pressure of the actuating medium are minimized.

I have illustrated and described a preferred and satisfactory form, but, obviously, changes could be made within the spirit and scope of my invention.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

l. In a compound turbine, the combination of a rotor', an annular series oi vanes carried thereby, means for conducting an actuating medium in a helical path and for directing said medium with progressively increased velocity through said vanes at successive points along its path, substantially as described.

2. In a compound turbine, the combination of: a rotor,

an annular series ol? vanes carried thereby, and means for repeatedly directing an actuating medium against the outer peripher)Y of said annular series ot vanes in a successive series or jets of progressively increased velocity, substantially as described.

In a compound turbine, the combination of a rotor, an annular' series oi' rotor vanes provided with admission and exhaust. edges in the periphery of said rotor, a series of admission por'ts uniformly spaced about the periphery ol the admission edges ol" said annular' series of varies, and a series of exhaust ports uniformly spaced about the periphery of: the exhaust edges ol' said vanes, the successive ports of said series being formed with progressively increased peripheral dimensions and the successive exhaust ports arrangedv at a progressively decreased angle in advance ol' the next preceding admission ports, substantially as described.

i. In a turbine, a rotor comprising disks, annular blocks provided with cooperating recesses correspondingl to the contour of the r'otor vanos, an annular series o1' rotor vanos positioned in said cooperating recesses, and a common means for clamping together said disks, annular' blocks, and vanes, substantially as described.

5. In a turbine, a rotor comprising disks, annular blocks provided with cooperating recesses, seats of relatively soi't material in said cooperating recesses, an annular series oiz rotor vanes positioned on said seats, and means for clamping together said disks, annular' blocks and vanes, and impressing said vanes in their relatively soft seats, substantially as described. y

(i. In a turbine, a rotor comprising disks,l annular blocks provided lwith cooperating recesses corresponding to the contour of tlre rotor vanos, seats of relatively soft metal deposited on the surfaces ol said recesses, an annular series of rotor vanes positioned in said coperating recesses, and means for clamping together said disks, annular' blocks and vanes, and impressing said vanes in their relatively soft seats, substantially as described.

7. In a turbine, a rotor comprising disks, a spacing member' carried by said disks, recessed annular' blocks seated on said spacing member', a series of vanes positioned in the recess of said annular blocks, and means engaging said disks for clamping therebetween said spacing member', annular blocks and vanes, substantially as described.

S. In a turbine, a rotor comprising disks, an annular spacing member carried by said disks, recessed annular' blocks seated on the outer periphery of said spacing member, a series of vanos positioned in the recess of said annular blocks, and means engaging said disks for clamping therebetween said spacing member, annular' blocks and vanes, substantially as described` In testimony whereof I affix my signature in presence of two witnesses.

RICHARD H. GOLDSBOROUGH.

Witnesses 1 G. Ariens, I-I. A. ROBINET'JE. 

